For each of the equation four choices have been provided .select the correct alternative Bimetallic strip works on the principal of ______
Bimetallic strip worked on the principal of ________
Which of the following electrical appliances work on the principal of the heating efect of electric current ?
Give reasons for the following : (i) Peptazing agent is added to convert a precipitate into a colloidal solution. (ii) Colloidal gold is used for intramuscular injection. (iii) Cottrell's smoke precipitator is fitted at the mouth of a chimeny used in factories.
NARENDRA AWASTHI-SURFACE CHEMISTRY-Level 3 - Assertion - Reason Type Questions